1. Mark Zuckerberg, Facebook chief executive, $992.2m to Silicon Valley Community Foundation
2. Phil Knight, Nike chairman, $500m to Oregon Health & Science University Foundation
3. Michael Bloomberg, businessman and former mayor of New York, $350m to Johns Hopkins University
4 Charles Johnson, financier, $250m to Yale University for residential buildings
5. Stephen Ross, real-estate developer, $200m to University of Michigan for athletics and the business school
6. Muriel Block, real-estate heiress, $160m to Yeshiva University’s College of Medicine
7. John Arrillaga, real-estate developer, $151m to Stanford University
8. Irwin Jacobs, co-founder of Qualcomm, and his wife Joan, $133m to Cornell University
9. Charles Munger, vice chairman of Berkshire Hathaway, $110m to University of Michigan for student housing
10. David Koch, businessman and political activist, $100m to New York Presbyterian Hospital